Table of Contents
Advertisement
UI Module UE4
Functional Description
Power Distribution Diagram
PWRXON
VBB
VBATT
Buzzer
UAGND
UDGND
Display Circuit
The display circuit includes LCD module GD40 and two capacitors. The
LCD module is COG (Chip on Glass) technology. The connection method
for chip on the glass is ACF, Adhesive Conductive Film. The LCD module
is connected to UI board with gold wired elastomer. Capacitors are placed
on UI PCB.
The display driver includes hw–reset, voltage tripler or quadrupler which
depends on temperature, temperature compensating circuit and low pow-
er control. Driver includes 84x48 RAM memory which is used when some
elements are create on display. Elements can be create with software.
Driver doesn't include CG–ROM. One bit in RAM is same as one pixel on
display.
PWRXON
VBB
VBATT
Buzzer
UAGND
UDGND
Page 4 – 8
LEDs of
LEDs of
Display
Keybord
LEDs of
LEDs of
Display
Keybord
PAMS
Technical Documentation
PWR
Display
key
PWR
Display
key
Original 11/97
Advertisement
Chapters
Table of Contents
